PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1950Filter,band Pass

De Coursey Engineering Laboratory · NSN 5915-00-491-6325 · FSC 5915 · No Item Name Available
Verified by PartsTable
NSN 5915-00-491-6325 — this item is cataloged by the U.S. Government under National Stock Number 5915-00-491-6325. Primary manufacturer part number: 1950.
Features
  • Filter,band Pass — FSC 5915
  • Average Life Rating in Hours: 10000.0
  • Operating Temp Range: -54.0 TO 71.0 CELSIUS DEGC
  • Specified Frequencies of Discrimination Per Function: 250.00 HERTZ BLANK AND 465.00 HERTZ BLANK AND 535.00 HERTZ BLANK AND 1.00 KILOHERTZ BLANK LOCATION NOT OTHERWISE SPECIFIED
  • Functional Terminal Type and Quantity: 1 WIRE HOOK INPUT FIRST FUNCTION
  • Distance Between Centerlines of Mounting Facilities Parallel to Body Width: 0.750 INCHES NOMINAL IN
  • Nominal Thread Size: 0.112 INCHES IN
  • Mounting Facility Type and Quantity: 2 THREADED STUD(S) LOCATION NOT OTHERWISE SPECIFIED
Applications
  • Fluid filtration and purification
  • Engine intake air cleaning
  • Hydraulic system protection
General Description

The Filter,band Pass, cataloged under National Stock Number 5915-00-491-6325, is classified within Federal Supply Class 5915 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is De Coursey Engineering Laboratory. Government technical data includes 24 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5915-00-491-6325
Primary Part Number1950
Item NameFilter,band Pass
FSC / FSG5915 / 59 — No Item Name Available
ManufacturerDe Coursey Engineering Laboratory
StatusACTIVE
Average Life Rating in Hours10000.0
Operating Temp Range-54.0 TO 71.0 CELSIUS DEGC
Specified Frequencies of Discrimination Per Function250.00 HERTZ BLANK AND 465.00 HERTZ BLANK AND 535.00 HERTZ BLANK AND 1.00 KILOHERTZ BLANK LOCATION NOT OTHERWISE SPECIFIED
Functional Terminal Type and Quantity1 WIRE HOOK INPUT FIRST FUNCTION
Distance Between Centerlines of Mounting Facilities Parallel to Body Width0.750 INCHES NOMINAL IN
Nominal Thread Size0.112 INCHES IN
Mounting Facility Type and Quantity2 THREADED STUD(S) LOCATION NOT OTHERWISE SPECIFIED
Body Height1.375 INCHES NOMINAL IN
Discrimination at Specified Frequencies Per Function in Decibels40.0 MINIMUM BLANK AND 7.0 MAXIMUM BLANK FIRST FUNCTION
Input Impedance Per Function W/load330.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED
Inclosure TypeENCASED
Body Length1.000 INCHES NOMINAL IN
Output Impedance Per Function W/source Across Input330.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED
Insertion Loss at Reference Frequency Per Function in Decibels5.0 BLANK LOCATION NOT OTHERWISE SPECIFIED
Reference Frequency Per Function500.0 HERTZ BLANK LOCATION NOT OTHERWISE SPECIFIED
Style DesignatorRECTANGULAR TERMINAL/TERMINALS ON ONE SURFACE
Frequency Band Width Per Function465.00 HERTZ BLANK AND 535.00 HERTZ BLANK LOCATION NOT OTHERWISE SPECIFIED
Maximum Dielectric Withstanding AC Rms Voltage500.0 VOLTS AT SEA LEVEL
Functional Terminal Type and Quantity1 WIRE HOOK GROUND THIRD FUNCTION
Mounting Facility Screw Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Functional Terminal Type and Quantity1 WIRE HOOK OUTPUT SECOND FUNCTION
Principal Circuitry Type Per FunctionINDUCTANCE-CAPACITANCE BLANK LOCATION NOT OTHERWISE SPECIFIED
Body Width1.000 INCHES NOMINAL IN
Vibration Resistance Range in Hertz+10.0 TO 55.0
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5365-00-057-77706002-596 INTERCHANGEABLE
Bushing,machine Thread
Raytheon Company Div Rmd Strategic
6625-00-106-7497 INTERCHANGEABLE
Oscilloscope
7490-00-153-9685 INTERCHANGEABLE
Address Plate Machine
4730-00-172-0061 INTERCHANGEABLE
Fitting,lubrication
5120-00-239-8251 INTERCHANGEABLE
Pliers
6505-00-268-9577 INTERCHANGEABLE
Sodium Bicarbonate Injection
5120-00-288-8707 INTERCHANGEABLE
Wrench,open End
5330-00-297-64321950 INTERCHANGEABLE
Seal,plain Encased
Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc
2805-00-354-082701950 INTERCHANGEABLE
Guide,valve Stem
Safeguard Powertech Systems
5330-00-354-10271950 INTERCHANGEABLE
Gasket
Dana Automotive Systems Group, Llc Dba Dana Sealing Products
Cross-Reference Index
Part NumberManufacturer
25A040 Quest Electronic Development Div Sacom/tpe (USA)
1950 PRIMARY De Coursey Engineering Laboratory (USA)
Related Parts
5365-00-057-7770INTERCHANGEABLE
BUSHING,MACHINE THREAD
6002-596
6625-00-106-7497INTERCHANGEABLE
OSCILLOSCOPE
7490-00-153-9685INTERCHANGEABLE
ADDRESS PLATE MACHINE
4730-00-172-0061INTERCHANGEABLE
FITTING,LUBRICATION
5120-00-239-8251INTERCHANGEABLE
PLIERS
6505-00-268-9577INTERCHANGEABLE
SODIUM BICARBONATE INJECTION
5120-00-288-8707INTERCHANGEABLE
WRENCH,OPEN END
5330-00-297-6432INTERCHANGEABLE
SEAL,PLAIN ENCASED
1950
2805-00-354-0827INTERCHANGEABLE
GUIDE,VALVE STEM
01950
5330-00-354-1027INTERCHANGEABLE
GASKET
1950
6670-00-393-1043INTERCHANGEABLE
SCALE,WEIGHING
1900
5998-00-407-3089INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY

Frequently Asked Questions

What is NSN 5915-00-491-6325?

NSN 5915-00-491-6325 is a Filter,band Pass, manufactured by De Coursey Engineering Laboratory, classified under FSC 5915 (No Item Name Available). Status: active.

What are the part numbers for NSN 5915-00-491-6325?

NSN 5915-00-491-6325 has 2 cross-referenced part numbers: 25A040 (Quest Electronic Development Div Sacom/tpe), 1950 (De Coursey Engineering Laboratory).

What NSN replaces 5915-00-491-6325?

There are 12 known substitutes for 5915-00-491-6325: 5365-00-057-7770, 6625-00-106-7497, 7490-00-153-9685 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1950?

Key specifications for 1950: Average Life Rating in Hours: 10000.0; Operating Temp Range: -54.0 TO 71.0 CELSIUS DEGC; Specified Frequencies of Discrimination Per Function: 250.00 HERTZ BLANK AND 465.00 HERTZ BLANK AND 535.00 HERTZ BLANK AND 1.00 KILOHERTZ BLANK LOCATION NOT OTHERWISE SPECIFIED; Functional Terminal Type and Quantity: 1 WIRE HOOK INPUT FIRST FUNCTION. 25 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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